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Chapter 38: Quality of Service Commands
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Console(config)#policy-map rd-policy
Console(config-pmap)#class rd-class
Console(config-pmap-c)#set cos 3
Console(config-pmap-c)#police flow 100000 4000 conform-action transmit
violate-action drop
Console(config-pmap-c)#
class
This command defines a traffic classification upon which a policy can act,
and enters Policy Map Class configuration mode. Use the no form to delete
a class map.
S
YNTAX
[ no ] class class-map-name
class-map-name - Name of the class map. (Range: 1-32 characters)
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
Policy Map Configuration
C
OMMAND
U
SAGE
•
Use the policy-map command to specify a policy map and enter Policy
Map configuration mode. Then use the class command to enter Policy
Map Class configuration mode. And finally, use the set command and
one of the police commands to specify the match criteria, where the:
•
set phb command sets the per-hop behavior value in matching
packets. (This modifies packet priority for internal processing only.)
•
set cos command sets the class of service value in matching
packets. (This modifies packet priority in the VLAN tag.)
•
set ip dscp command sets the IP DSCP value in matching packets.
(This modifies packet priority in the IP header.)
•
police commands define parameters such as the maximum
throughput, burst rate, and response to non-conforming traffic.
•
Up to 16 classes can be included in a policy map.
E
XAMPLE
This example creates a policy called “rd-policy,” uses the class command
to specify the previously defined “rd-class,” uses the set phb command to
classify the service that incoming packets will receive, and then uses the
police flow command to limit the average bandwidth to 100,000 Kbps, the
burst rate to 4,000 bytes, and configure the response to drop any violating
packets.